Sample characteristics
Table 1 reports descriptive statistics for the HRV index, the
subdimensions of the RRS, the three depression questionnaires, and
Depressionstandardized. After removing the samples that
had physiological data with poor quality or with values higher than
three standard deviations above the mean, a total of 1189 participants
were finally included. The sample sizes vary somewhat per variable due
to the different types of questionnaires collected in different
experiments.